The phrase "lied prone" refers to the act of lying flat on one's stomach. There are several synonyms that can be used in place of this phrase, such as "lying face down," "lying prostrate," or simply "lying flat." Other options include the more colloquial "belly down" or "stomach to the ground." In a medical context, the term "prone position" may be used, especially in relation to patients undergoing certain procedures or recovering from surgery. Regardless of the specific wording used, the underlying meaning remains the same: a person is lying horizontally with their chest and abdomen in contact with the ground or other surface.